129.Comparable interface

What is a Comparable interface in Java?

• Sorting utility
• Functional interface
• Date library
• Custom comparator

How does the Comparable interface work?

• Sorts arrays
• Implements equality
• Defines compareTo()
• Defines compare()

What is Comparator vs Comparable interface in Java?

• Both compare objects
• Comparable: single sorting, Comparator: custom sorting
• Comparator: in-built, Comparable: custom
• Comparable: in-built, Comparator: custom

What does the Comparable interface in Java equal?

• Equals method
• Compare method
• CompareTo method
• Comparator interface

What is the difference between Comparator and Comparable interface?

• No difference
• Comparable is for numbers
• Comparator handles custom sorting
• Comparator is for strings

Is Comparator a functional interface?

• Yes
• No

What is Comparable in Java with an example?

• String comparison
• Object sorting
• Sorting numbers
• Custom comparators

Why is Comparable a functional interface?

• No reason
• Enables lambda
• Simplifies equals()
• Handles exceptions

What does the Comparable interface contain?

• Only equals()
• Only compareTo()
• equals() and compareTo()
• compare()

Why Comparator is used in Java?

• For inheritance
• For equals comparison
• For custom sorting
• For default sorting